Improvement in lever-staffs for watches



PATENT GFFIC VILLIAM E. BANTA, OF SPRINGFIELD, OHIO.

IMPROVEMENT IN LEVER-STAFFS FOR WATCHES, &c.

Specification forming part of Letters Patent No. 117,242, dated July 25, 1871.

To all whom it may concern:

Be it known that I, WILLIAM E. BANTA, of Springfield, in the county ot' Olark and State of Ohio, have invented certain new and useiul Iniprovements in Lever-Staffs for lhvfatehes, Olocks, and Ohronometers; and I do hereby declare the the following' to be a full, clear, and exact description of the same, reference being had to the accompanying drawing making a part ot' this speciiieation, in which- Figure l represents, in perspective, the leverstat't', in question, with a lever attached for the sake of illustration, any other torni ot' lever being capable of connection with the Fig. 2 represents an elevation of the statt' and lever, and, in dotted lines, the balance-wheel with which such lever-staffs operate, for the sake of illustration.

My invention consists in the arrangement of a long lever-statt' with a bend or bow in it, in relation to the balance-wheel and the connectinglever, so that a short connecting-lever may be used and the balance-wheel vibrate in the bend or bow of said long lever-statt.

To enable others skilled in the art to make and use my invention, I will proceed to describe the same with reference to the drawing.

a represents the lever-statt', with its pivots c c opposite each other. e represents a lever, connected to said stai, and extending to, so as to be operated by the balance-wheel, or other part connected to or moved by the balance-wheel. On the opposite side of the pivots from where the lever projects is the crank, bow, or U-portion of the staff, so as to balance the lever c and thus relieve the balance-wheel of its weight, while it admits orp the vibration of the balancewheel on said bend or bow.

B y this construction ot'lever-staft' I am enabled to use a long lever-statt' in connection with a short lever, and the balance-wheel can play or vibrate within the opening` of said lever-stati', and the lever-stattA may be ot' the saine length as the balance-statt' and be pivoted in the saine plates or i'ranles therewith. A lever with a long statt' I prefer, as it operates with more steadiness than a lever with a short stattl does.

The crank, bowed, or bent portion of the leverstatt' is made to balance, or nearly so, the lever e, and it may be loaded or relieved until it balances said lever' c.

At Fig. 3 is shown the modification of the U or bow-form ot lever-statt', and lever e made on, or as apart ot' it. It may, however, be ot' a bowform, and the lever attached to it, as in Figs. l. and 2, or otherwise, as preferred.

Having thus i'ully described my invention, what I claim is The lever-stati' a or its equivalent, consti-noted to operate in connection with the lever e and with a balance-wheel arranged to vibrate in the bend oi' said lever-staff, thus giving more length to the lever-stati' a without taking up any more space in the watch than is allotted to the ordinary shorter lever.

WILLIAM BANTA.

Vitnesses W. J. IRWIN, SALEM T. LAMB. 

